So I bought caribsea super naturals for use in my saltwater aquarium. I figured I would try using sand to see how the look would be. However soon after I added the snails to the tank the nassarius snails would flip over and seem to have died about a day or 2 after and the conch that I added also seemed unhappy. The other snails just stick to the glass and seem fine. Is there something wrong with the sand that I bought or might it be something else?